Buffalo County, SD population age distributions
A complete breakdown of Buffalo County's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 5 years | 235 | 12.64% |
| 5 to 9 years | 160 | 8.61% |
| 10 to 14 years | 170 | 9.14% |
| 15 to 19 years | 221 | 11.89% |
| 20 to 24 years | 162 | 8.71% |
| 25 to 29 years | 113 | 6.08% |
| 30 to 34 years | 104 | 5.59% |
| 35 to 39 years | 68 | 3.66% |
| 40 to 44 years | 150 | 8.07% |
| 45 to 49 years | 66 | 3.55% |
| 50 to 54 years | 89 | 4.79% |
| 55 to 59 years | 77 | 4.14% |
| 60 to 64 years | 104 | 5.59% |
| 65 to 69 years | 58 | 3.12% |
| 70 to 74 years | 29 | 1.56% |
| 75 to 79 years | 30 | 1.61% |
| 80 to 84 years | 15 | 0.81% |
| 85 years and over | 8 | 0.43% |
TABLE OF CONTENTS
Buffalo County, SD population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
Buffalo County, SD population by age group.
The largest age group is Under 5 years with a population of 235 (12.64% of the total population).
The largest age group in Buffalo County, SD was for the group of age Under 5 years with a population of 235 (12.64%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in Buffalo County, SD was the 85 years and over with a population of 8 (0.43%).
Buffalo County, SD population by age cohort
To better understand the age distribution of Buffalo County, SD's population, we divided it into the following 3 cohorts:
- Children : Under the age of 18 years
- Adults (working population): Between the age of 18 and 64 years
- Seniors: 65 years and above
FIGURE 2
Buffalo County, SD population by age cohort
The largest age group was 18 to 64 years with a population of 1,012 (54.44% of the total population).
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Buffalo County 's population under 18 was 38.03%, compared to the 22.11% nationwide.
- Buffalo County's working population (between 18 and 64) was 54.44%, compared to 61.36% nationwide.
- Buffalo County's elderly or the senior population (over 65 age) was 7.53% as compared to 16.53% nationwide.
Buffalo County, SD population pyramid
Population pyramid for Buffalo County, SD is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.
Key stats from our analysis of the Buffalo County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Buffalo County, SD, is 49.0.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Buffalo County, SD, is 12.1.
- Total dependency ratio for Buffalo County, SD is 61.1.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Buffalo County, SD is 8.2.
FIGURE 3
Buffalo County, SD population pyramid
Buffalo County population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
Buffalo County, SD population pyramid
Here's the Buffalo County, SD's male and female population across different age groups .
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 136 | 99 | 235 |
| 5 to 9 years | 70 | 90 | 160 |
| 10 to 14 years | 98 | 72 | 170 |
| 15 to 19 years | 125 | 96 | 221 |
| 20 to 24 years | 71 | 91 | 162 |
| 25 to 29 years | 50 | 63 | 113 |
| 30 to 34 years | 60 | 44 | 104 |
| 35 to 39 years | 37 | 31 | 68 |
| 40 to 44 years | 67 | 83 | 150 |
| 45 to 49 years | 51 | 15 | 66 |
| 50 to 54 years | 41 | 48 | 89 |
| 55 to 59 years | 47 | 30 | 77 |
| 60 to 64 years | 52 | 52 | 104 |
| 65 to 69 years | 28 | 30 | 58 |
| 70 to 74 years | 19 | 10 | 29 |
| 75 to 79 years | 26 | 4 | 30 |
| 80 to 84 years | 9 | 6 | 15 |
| 85 years and over | 5 | 3 | 8 |
Things to know
What is the population of Buffalo County, SD under 18?
Buffalo County's population under the age of 18 is 707, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 38.03% of the total resident population of Buffalo County, SD.
What is the aging population in Buffalo County, SD?
Buffalo County's population aged 65 years and above was 140. As per the U.S. Census Bureau's American Community Survey, this population is 7.53% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates